uestion # 4 a) Consider three concurrent processes A, B, and C, synchronized by three semaphores mutex, goB, and goC, which are initialized to 1, 0 and 0 respectively: Process A wait (mutex) signal (goB) signal. (mutex) Process B wait (mutex) wait ess C wait (mutex) wait (goC signal (mutex) signal (goc) signal (mutex) Does there exist an execution scenario in which: (i) All three processes block permanently? (ii) Precisely two processes block permanently? (ii) No process blocks permanently? Justify your answers. b) Now consider a slightly modified example involving two processes Process A Process B for i 0 . In this case, does there exist an execution scenario in which both processes block permanently? Does there exist an execution scenario in which neither process blocks permanently? Explain your answers (ii)Now, let m